fix(gui): 简化GIF生成错误处理逻辑，直接解码错误输出

This reverts commit 302dbc805f49d1403923369e7f31283309abd973.

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "pip" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "daily"

.gitignore

@@ -1 +1,2 @@
 __pycache__/gui.cpython-311.pyc
+ffmpeg/ffmpeg.exe

gui.py

@@ -140,22 +140,6 @@ class VideoToGifConverter:
         self.duration_entry.pack(side="left", padx=5)
         ttk.Label(duration_frame, text="(留空表示全部)").pack(side="left", padx=5)
 
-        # 质量设置
-        quality_frame = ttk.Frame(self.settings_frame)
-        quality_frame.pack(fill="x", padx=5, pady=5)
-
-        ttk.Label(quality_frame, text="质量设置:").pack(side="left", padx=5)
-        self.quality_var = tk.StringVar(value="medium")
-        ttk.Radiobutton(
-            quality_frame, text="高质量", variable=self.quality_var, value="high"
-        ).pack(side="left", padx=5)
-        ttk.Radiobutton(
-            quality_frame, text="中等", variable=self.quality_var, value="medium"
-        ).pack(side="left", padx=5)
-        ttk.Radiobutton(
-            quality_frame, text="低质量", variable=self.quality_var, value="low"
-        ).pack(side="left", padx=5)
-
         # 输出设置
         output_frame = ttk.Frame(self.settings_frame)
         output_frame.pack(fill="x", padx=5, pady=5)
@@ -220,16 +204,6 @@ class VideoToGifConverter:
         for file in files:
             self.files_list.insert(tk.END, file)
 
-    def get_quality_settings(self):
-        """根据质量设置返回 FFmpeg 参数"""
-        quality = self.quality_var.get()
-        if quality == "high":
-            return ["-quality", "100"]
-        elif quality == "medium":
-            return ["-quality", "75"]
-        else:
-            return ["-quality", "50"]
-
     def validate_inputs(self):
         """验证输入参数"""
         try: